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CM-2022-157 - 7/1/2022City of Round Rock Transportation Department ROUND ROCK TEXAS Edwards Aquifer Exception Request Application For 2021 CDBG Sidewalk Project Chisholm Valley Subdivision June 2022 MATTHEW BUSHAK .......................... 91480 ; Edwards Aquifer Application Cover (Section 1) Recharge and Transition Zone Exception Request Table of Contents Section 1- Edwards Aquifer Application Cover Page (TCEQ-20705) Section 2 - General Information Form (TCEQ-0587) Attachment A - Road Map Attachment B - USGS / Edwards Recharge Zone Map Attachment C - Project Description Section 3 - Geologic Assessment Form (TCEQ-0585) — (Not Applicable) Section 4 - Recharge and Transition Zone Exception Request Form (TCEQ-0628) Attachment A - Nature of Exception Attachment B - Documentation of Equivalent Water Quality Protection Section 5 - Temporary Stormwater Section (TCEQ 0602) Attachment A - Spill Response Actions Attachment B - Potential Sources of Contamination Attachment C - Sequence of Major Activities Attachment D - Temporary Best Management Practices and Measures Attachment E - Request to Temporarily Seal a Feature (Not Applicable) Attachment F - Structural Practices Attachment G - Drainage Area Map Attachment H - Temporary Sediment Pond(s) Plans and Calculations (Not Applicable) Attachment I - Inspection and Maintenance for BMPs Attachment J - Schedule of Interim and Permanent Soil Stabilization Practices Section 6 - Permanent Stormwater Section (TCEQ-0600) Attachment A - 20% or Less Impervious Cover Waiver (Not Applicable) Attachment B - BMPs for Upgradient Stormwater Attachment C - BMPs for On -site Stormwater Attachment D - BMPs for Surface Streams (Not Applicable) Attachment E - Request to Seal Features, if sealing a feature (Not Applicable) Attachment F - Construction Plans Attachment G - Inspection, Maintenance, Repair and Retrofit Plan Attachment H -Pilot-Scale Field Testing Plan, if BMPs not based on Complying with the Edwards Aquifer Rules: Technical Guidance for BMPs (Not Applicable) Attachment I -Measures for Minimizing Surface Stream Contamination (Not Applicable) Section 7 - Agent Authorization Form (TCEQ-0599) Section 8 - Fee Application Form (TCEQ-0574) Section 9 - Check Payable to the "Texas Commission on Environmental Quality" Section 10- Core Data Form (TCEQ-10400) Texas Commission on Environmental Quality Edwards Aquifer Application Cover Page Our Review of Your Application The Edwards Aquifer Program staff conducts an administrative and technical review of all applications. The turnaround time for administrative review can be up to 3o days as outlined in 3o TAC 213.4(e). Generally administrative completeness is determined during the intake meeting or within a few days of receipt. The turnaround time for technical review of an administratively complete Edwards Aquifer application is go days as outlined in 3o TAC 213.4(e). Please know that the review and approval time is directly impacted by the quality and completeness of the initial application that is received. In order to conduct a timely review, it is imperative that the information provided in an Edwards Aquifer application include final plans, be accurate, complete, and in compliance with .TAC 212. Administrative Review 1. E I& Uu fer agpli tigW must be deemed administratively complete before a technical review can begin. To be considered administratively complete, the application must contain completed forms and attachments, provide the requested information, and meet all the site plan requirements. The submitted application and plan sheets should be final plans. Please submit one full-size set of plan sheets with the original application, and half-size sets with the additional copies. To ensure that all applicable documents are included in the application, the program has developed tools to guide you and web pages to provide all forms, checklists, and guidance. Please visit the below website for assistance: htt:llw}vw.ce,texfs gov{'fieltlfea. 2. This Edwards Aquifer Application Cover Page form (certified by the applicant or agent) must be included in the application and brought to the administrative review meeting. 3. Administrative reviews are scheduled with program staff who will conduct the review. Applicants or their authorized agent should tail the appropriate regional office, according to the county in which the project is located, to schedule a review. The average meeting time is one hour. 4. In the meeting, the application is examined for administrative completeness. Deficiencies will be noted by staff and emailed or faxed to the applicant and authorized agent at the end of the meeting, or shortly after. Administrative deficiencies will cause the application to be deemed incomplete and returned. An appointment should be made to resubmit the application. The application is re-examined to ensure all deficiencies are resolved. The application will only be deemed administratively complete when all administrative deficiencies are addressed. S. If an application is received by mail, courier service, or otherwise submitted without a review meeting, the administrative review will be conducted within 3o days. The applicant and agent will be contacted with the results of the administrative review. If the application is found to be administratively incomplete, it can be retrieved from the regional office or returned by regular mail. If returned by mail, the regional office may require arrangements for return shipping. 6. If the geologic assessment was completed before October 1, 2004 and the site contains "possibly sensitive" features, the assessment must be updated in accordance with the Instructions to Geologists (TCEQ-0585 Instructions). Technical Review 1. When an application is deemed administratively complete, the technical review period begins. The regional office will distribute copies of the application to the identified affected city, county, and groundwater conservation district whose jurisdiction includes the subject site. These entities and the public have 3o days to provide comments on the application to the regional office. All comments received are reviewed by TCEQ. 2. A site assessment is usually conducted as part of the technical review, to evaluate the geologic assessment and observe existing site conditions. The site must be accessible to our staff. The site boundaries should be TCEQ-20705 (Rev. 02-17-17) 1 of 4 clearly marked, features identified in the geologic assessment should be flagged, roadways marked and the alignment of the Sewage Collection System and manholes should be staked at the time the application is submitted. If the site is not marked the application may be returned. 3. We evaluate the application for technical completeness and contact the applicant and agent via Notice of Deficiency (NOD) to request additional information and identify technical deficiencies. There are two deficiency response periods available to the applicant. There are 14 days to resolve deficiencies noted in the first NOD. If a second NOD is issued, there is an additional 14 days to resolve deficiencies. If the response to the second notice is not received, is incomplete or inadequate, or provides new information that is incomplete or inadequate, the application must be withdrawn or will be denied. Please note that because the technical review is underway, whether the application is withdrawn or denied the application fee will be forfeited. 4. The program has go calendar days to complete the technical review of the application. If the application is technically adequate, such that it complies with the Edwards Aquifer rules, and is protective of the Edwards Aquifer during and after construction, an approval letter will be issued. Construction or other regulated activity may not begin until an approval is issued. Mid -Review Modifications It is important to have final site plans prior to beginning the permitting process with TCEQ to avoid delays. Occasionally, circumstances arise where you may have significant design and/or site plan changes after your Edwards Aquifer application has been deemed administratively complete by TCEQ. This is considered a "Mid - Review Modification". Mid -Review Modifications may require redistribution of an application that includes the proposed modifications for public comment. If you are proposing a Mid -Review Modification, two options are available: • If the technical review has begun your application can be denied/withdrawn, your fees will be forfeited, and the plan will have to be resubmitted. • TCEQ can continue the technical review of the application as it was submitted, and a modification application can be submitted at a later time. If the application is denied/withdrawn, the resubmitted application will be subject to the administrative and technical review processes and will be treated as a new application. The application will be redistributed to the affected jurisdictions. Please contact the regional office if you have questions. If your project is located in Williamson, Travis, or Hays County, contact TCEQ's Austin Regional Office at 512-339-2929• If your project is in Comal, Bexar, Medina, Uvalde, or Kinney County, contact TCEQ's San Antonio Regional Office at 210-490-3o96 Please fill out all required fields below and submit with your application. 1. Regulated Entity Name: 2021 CDBG Sidewalk Project — Chisholm Valley Subdivision 2. Regulated Entity No.: N/A 3. Customer Name: City of Round Rock 4. Customer No.: 600413181 5. Project Type: (Please circle/check one) New Modification Extension Exception 6. Plan Type: (Please circle/check one) WPAP CZP SCS UST AS EXP EXT Technical Clarification Optional Enhanced Measures 7. Land Use: (Please circle/check one) Residential N/ Non-residential 8. Site (acres): 9. Application Fee: 5oo.00 1o. Permanent BMP(s): Vegetated Controls 11. SCS (Linear Ft.): N/A 12. AST/UST (No. Tanks): N/A 13. County: Williamson 14. Watershed: Lake Creek — Brushy Creek TCEQ-20705 (Rev. 02-17-17) 2 of 4 Application Distribution Instructions: Use the table below to determine the number of applications required. One original and one copy of the application, plus additional copies (as needed) for each affected incorporated city, county, and groundwater conservation district are required. Linear projects or large projects, which cross into multiple jurisdictions, can require additional copies. Refer to the "Texas Groundwater Conservation Districts within the EAPP Boundaries" map found at: http Jfwww_ttea.tg ,gpyJ=e ublicleornpliance/field onsleannlKAPP962_QQ CU%2oman.ndf For more detailed boundaries, please contact the conservation district directly. Austin Region County: Hays Travis Williamson Original (i req.) _ x Region (1 req.) _ x Cou nty(ies) _ _ x Edwards Aquifer Authority Groundwater Conservation District(s) —Barton Springs/ Barton Springs{ Edwards Aquifer Edwards Aquifer NA Hays Trinity Plum Creek .Austin _Austin Buda Austin _Cedar Para. Dripping Springs _Bee Cave _Florence City(ies) Jurisdiction ptlu enrille — g Georgetown _Kyle CityRound Rollingwood Jerrell _Mountain San Marcos Rock —Leander Wimberley _Sunset Valley Liberty Hill �Woodcreek —West Lake Hills Ptlugenille X Round Rock San Antonio Region County: Bexar Comal Kinney Medina Uvalde Original (1 req.) Region (i req.) County(ies) — — Groundwater Edwards Aquifer Conservation — Authority Edwards Aquifer Kinney EAA EAA District(s) —Trinity-Glen Rose Authority Medina — Uvalde Castle Hills Fair Oaks Ranch Bulverde City(ies) _Helotes Fair Oaks Ranch San Jurisdiction Hill Country Village _Garden Ridge NA Antonio ETJ NA _Hollywood Park —New Braunfels (SAWS) _San Antonio (SAWS) Schertz Shavano Park TCEQ-20705 (Rev. 02-17-17) 3 of 4 General Information Form (Section 2) I certify that to the best of my knowledge, that the application is complete and accurate.' application is hereby submitted to TCEQ for administrative review and technical review. Najhe ofj�.'eqyspet&uthorized Agent Agent "FOR TCEQ INTERNAL USE ONLY" Date(s)Reviewed: Date Administratively Complete: Received From: Correct Number of Copies: Received By: Distribution Date: EAPP File Number: Complex: Admin. Review(s) (No.): No. AR Rounds: Delinquent Fees (Y/N): Review Time Spent: Lat./Long. Verified: SOS Customer Verification: Agent Authorization ComvleteJ Notarized (Y N): Fee Check: Payable to TCEQ (Y/N): Core Data Form Complete (Y/N): Signed (Y/N): Core Data Form Incomplete Nos.: Less than go days old (Y/N): TCEQ-20705 (Rev. 02-17-17) 41,14 General Information Form Texas Commission on Environmental Quality For Regulated Activities on the Edwards Aquifer Recharge and Transition Zones and Relating to 30 TAC §213.4(b) & §213.5(b)(2)(A), (B) Effective June 1, 1999 To ensure that the application is administratively complete, confirm that al! fields in the form are complete, verify that all requested information is provided, consistently reference the some site and contact person in all forms in the application, and ensure forms are signed by the appropriate party. Note: Including all the information requested in the form and attachments contributes to more streamlined technical reviews. Signature To the best of my knowledge, the responses to this form accurately reflect all information requested concerning the proposed regulated activities and methods to protect the Edwards Aquifer. This General Information Form is hereby submitted for TCEQ review. The application was prepared by: Print Name of Customer/Agent: 4< Z&Y U- AJ2OGV-- Date: WZf/24Z2- Signature of Customer/Agent: Project information 1. Regulated Entity Name: 2021 CDBG Sidewalk Project - Chisholm Valley Subdivision 2. County: Williamson 3. Stream Basin: Lake Creek- Brushy Creek 4. Groundwater Conservation District (If applicable): 5. Edwards Aquifer Zone: N/A X❑ Recharge Zone ❑ Transition Zone 6. Plan Type: ❑ WPAP ❑ SCS ❑ Modification TCEQ-0587 (Rev. 02-11-15) ❑ AST ❑ UST ❑X Exception Request 1 of 4 7. Customer (Applicant): Contact Person: Laurie Hadley Entity: City of Round Rock Mailing Address: 221 E. Main St. City, State: Round Rock, TX Telephone: 512 218 - 3234 Email Address: Ihadley@roundrocktexas.gov 8. Agent/Representative (If any): Contact Person: GaryHudder Entity: City of Round Rock Mailing Address: 3400 Sunrise Road 9. City, State: Round Rock, TX Telephone: (512) 218 - 5560 Email Address: ghudder@roundrocktexas.gov Zip: 78664 FAX: (512) 218 - 7097 Zip: 78664 FAX: (512) 218 - 5536 10. Project Location: ® The project site is located inside the city limits of Round Rock, TX. ❑ The project site is located outside the city limits but inside the ETJ (extra -territorial jurisdiction) of ❑ The project site is not located within any city`s limits or ETJ. 10. ® The location of the project site is described below. The description provides sufficient detail and clarity so that the TCEQ's Regional staff can easily locate the project and site boundaries for a field investigation. The regulated project site will include Wagon Gap Drive, Dry Creek Drive, Old West Drive Rawhide Drive, Old West Place Purple Sage Drive, and Yucca Drive from the limits of Hesters Crossing Rd and Chisholm Valley Drive within the Chisholm Valley Subdivision. Chisholm Valley Subdivision is located just west of Interstate 35 and just south of McNeil Road. All roads in this project have a 50 ft wide ROW. 11. ® Attachment A — Road Map. A road map showing directions to and the location of the project site is attached. The project location and site boundaries are clearly shown on the map. 12. ® Attachment B - USGS / Edwards Recharge Zone Map. A copy of the official 7 % minute USGS Quadrangle Map {Scale: 1" = 2000') of the Edwards Recharge Zone is attached. The map(s) clearly show: ® Project site boundaries. ® USGS Quadrangle Name(s). ® Boundaries of the Recharge Zone (and Transition Zone, if applicable). ® Drainage path from the project site to the boundary of the Recharge Zone. 2 of 4 TCEQ-0587 (Rev. 02-11-15) 13. ® The TCEQ must be able to inspect the project site or the application will be returned. Sufficient survey staking is provided on the project to allow TCEQ regional staff to locate the boundaries and alignment of the regulated activities and the geologic or manmade features noted in the Geologic Assessment. ® Survey staking will be completed by this date: Staking has not been provided, but the proiect site location is easily determined. The location is described on the forms, maps, and construction plans provided as part of this application. An exception to Geologic Assessment is part of this request. 14. ® Attachment C — Project Description. Attached at the end of this form is a detailed narrative description of the proposed project. The project description is consistent throughout the application and contains, at a minimum, the following details: ® Area of the site ® Offsite areas ® Impervious cover ® Permanent BMP(s) ® Proposed site use ® Site history ® Previous development ® Area(s) to be demolished 15. Existing project site conditions are noted below: ❑ Existing commercial site ❑ Existing industrial site ® Existing residential site ® Existing paved and/or unpaved roads ❑ Undeveloped (Cleared) ❑ Undeveloped (Undisturbed/Uncleared) ❑ Other: Prohibited Activities 16. ® I am aware that the following activities are prohibited on the Recharge Zone and are not proposed for this project: (1) Waste disposal wells regulated under 30 TAC Chapter 331 of this title (relating to Underground Injection Control); (2) New feedlot/concentrated animal feeding operations, as defined in 30 TAC §213.3; (3) Land disposal of Class I wastes, as defined in 30 TAC §335.1; (4) The use of sewage holding tanks as parts of organized collection systems; and (5) New municipal solid waste landfill facilities required to meet and comply with Type I standards which are defined in §330.41(b), (c), and (d) of this title (relating to Types of Municipal Solid Waste Facilities). 3 of 4 TCEQ-0587 (Rev. 02-11-15) (6) New municipal and industrial wastewater discharges into or adjacent to water in the state that would create additional pollutant loading. 17. ® 1 am aware that the following activities are prohibited on the Transition Zone and are not proposed for this project: (1) Waste disposal wells regulated under 30 TAC Chapter 331 (relating to Underground Injection Control); (2) Land disposal of Class I wastes, as defined in 30 TAC §335.1; and (3) New municipal solid waste landfill facilities required to meet and comply with Type I standards which are defined in §330.41(b), (c), and (d) of this title. Administrative Information 18. The fee for the plan(s) is based on: ❑ For a Water Pollution Abatement Plan or Modification, the total acreage of the site where regulated activities will occur. ❑ For an Organized Sewage Collection System Plan or Modification, the total linear footage of all collection system lines. ❑ For a UST Facility Plan or Modification or an AST Facility Plan or Modification, the total number of tanks or piping systems. ® A request for an exception to any substantive portion of the regulations related to the protection of water quality. ❑ A request for an extension to a previously approved plan. 19. ❑ Application fees are due and payable at the time the application is filed. If the correct fee is not submitted, the TCEQ is not required to consider the application until the correct fee is submitted. Both the fee and the Edwards Aquifer Fee Form have been sent to the Commission's: ❑ TCEQ cashier ® Austin Regional Office (for projects in Hays, Travis, and Williamson Counties) ❑ San Antonio Regional Office (for projects in Bexar, Comal, Kinney, Medina, and Uvalde Counties) 20. ® Submit one (1) original and one (1) copy of the application, plus additional copies as needed for each affected incorporated city, groundwater conservation district, and county in which the project will be located. The TCEQ will distribute the additional copies to these jurisdictions. The copies must be submitted to the appropriate regional office. 21. ® No person shall commence any regulated activity until the Edwards Aquifer Protection Plan(s) for the activity has been filed with and approved by the Executive Director. 4 of 4 TCEQ-0587 (Rev. 02-11-15) Roun u ri Cf < 0Z3 Z) u c wi c: a z< 0 SIMON.- vt o D w CL 0 .0,00 oalp 0 Woo-, u V cn a 0 0 0 d) CL Sro o m E vi 7p� 'a E-0 0 0 I'll MIR ' c 10:1 CL m I N 4-J UO 4� LLI CL cn C; CJD r U 0 EN =1 b u m 0 0 Lt Erjl: PARk f]l' fA 4 [ry7G cl U pC ti 35 SJGgo � 0 �r 5A(;EBRU5r -.O'R r RgkL)UP TRL _ ao ., )Q d'd y-ji 0�d E 5 Z V a m Ln o c a en c am a V+ m �aYaE p' am;? o Ul C a C D O r W = O N A. C a e` � Z V m Z Y m C) P E o m o N z m z ,Wa N,0 m40 w tn z I� E �D C Q m M" 4= w c C d"y N N �O C .N Y L O V1 o CY {t! m 0 'p v O a, N w 0 Q y o m m 0 3 3 w iu a w in I� I �� Z c c r OLon� CL 5m N U Q N E W 'o a � N o V� m i0 � p a V) c I.Y m V F- *+ m v C 0 0 d Ecv 0 � O 0 m 41 Q General Information Form Attachment C-Project Description 2021 CDBG Sidewalk Project -Chisholm Valle Subdivision) The purpose of the 2021 CDBG Sidewalk Project — Chisholm Valley Subdivision is to provide access to sidewalks on several streets within the Chisholm Valley Subdivision. The streets include Wagon Gap Drive, Dry Creek Drive, Old West Drive, Rawhide Drive, Old West Place, Purple Sage Drive, and Yucca Drive from the limits of Hesters Crossing Rd and Chisholm Valley Drive within the Chisholm Valley Subdivision. The entire site location is on 60.34 acres of fully developed residential area. The 2021 CDBG Sidewalk Project — Chisholm Valley Subdivision consists of constructing 4- foot wide concrete sidewalks and pedestrian ramps along the streets mentioned above. The proposed sidewalks will tie into the existing sidewalks and pedestrian ramps. The sidewalk is approximately 5,250 linear feet and will meander between 3 feet to 5 feet from the back of curb. The sidewalk will generally drain onto a permanent 3 foot, to 5 foot, grassed filtered strip, located between the sidewalk and the existing back of curb, before spilling over into the lip of gutter. In addition, a portion of several existing driveways will be reconstructed to provide a pedestrian pathway that is ADA accessible. The sidewalk will add roughly 0.48 acres of impervious cover to the 7.44 acres of existing ROW; roughly a 6.4% addition to existing impervious cover consisting of roads and driveways. Driveway reconstruction is limited to existing driveways, therefore no new impervious will be generated due to that activity. The total area to be disturbed is 0.63 acres. The existing ground cover is compacted dirt and grass. The small amount of impervious cover being added, and the aforementioned grassed filter strip will potentially provide sufficient justification for exception to the requirements of filing a Water Pollution Abatement Plan (WPAP) and a Geologic Assessment. Recharge & Transition Zone Exception Request (Section 4) Recharge and Transition Zone Exception Request Form Texas Commission on Environmental Quality 30 TAC §213.9 Effective June 1, 1999 To ensure that the application is administratively complete, confirm that all fields in the form are complete, verify that all requested information is provided, consistently reference the same site and contact person in all forms in the application, and ensure forms are signed by the appropriate party. Note: including all the information requested in the form and attachments contributes to more streamlined technical reviews. Signature To the best of my knowledge, the responses to this form accurately reflect all information requested concerning the proposed regulated activities and methods to protect the Edwards Aquifer. This Recharge and Transition Zone Exception Request Form is hereby submitted for TCEQ review and executive director approval. The request was prepared by: Print Name f C stomer/Agent: Gary Hudder Date: ?O 2, Signature of Customer/Agent: Regulatedntity Name: 2021 CDBG Sidewalk Project - Chisholm Valley Subdivision Exception Request 1. X❑ Attachment A - Nature of Exception. A narrative description of the nature of each exception requested is attached. All provisions of 30 TAC §213 Subchapter A for which an exception is being requested have been identified in the description. 2. X❑ Attachment B - Documentation of Equivalent Water Quality Protection. Documentation demonstrating equivalent water quality protection for the Edwards Aquifer is attached. Administrative Information 3. X❑ Submit one (1) original and one (1) copy of the application, plus additional copies as needed for each affected incorporated city, groundwater conservation district, and county in which the project will be located. The TCEQ will distribute the additional copies to these jurisdictions. The copies must be submitted to the appropriate regional office. 4. ❑X The applicant understands that no exception will be granted for a prohibited activity in Chapter213. 5. ❑X The applicant understands that prior approval under this section must be obtained from the executive director for the exception to be authorized. 1of1 TCEQ-0628 (Rev. 03-13-15) Exception Request Form Attachment A — Nature of Exception (2021 CDBG Sidewalk Project — Chisholm Valley Subdivision) This exception request is to allow for the construction of a small net increase in impervious cover due to sidewalk construction along an existing public roadway without filing a Water Pollution Abatement Plan (WPAP), or performing a Geologic Assessment. The regulated activity consists of constructing 4-foot wide concrete sidewalks along Wagon Gap Drive, Dry Creek Drive, Old West Drive, Rawhide Drive, Old West Place, Purple Sage Drive, and Yucca Drive from the limits of Hesters Crossing Road and Chisholm Valley Drive within the Chisholm Valley Subdivision. Approximately 5,250 linear feet of 4-foot wide concrete sidewalk is proposed to be constructed along the same linear footage of existing fully developed roadway. Storm water conveyed over the new sidewalk will drain onto a 3- to 5-foot wide grassed filter strip between the proposed sidewalk and the existing back of curb, before continuing on to the gutter system. The sidewalk will add roughly 0.48 acres of impervious cover to the 7.44 acres of existing ROW; roughly a 6.4% addition to existing impervious cover. The total area to be disturbed is 0.63 acres, which includes area adjacent to the sidewalk and the reconstruction of portions of the existing driveways. The existing ground cover is compacted dirt and grass. The small amount of impervious cover being added, and the aforementioned grassed filter strip will potentially provide sufficient justification for exception to the requirements of filing a Water Pollution Abatement Plan and a Geologic Assessment. Exception Request Form Attachment B — k Project — Chisholm Valley Subd Protection The proposed sidewalks will be constructed within available right-of-way that is currently characterized as a pervious area outside of the roadway curbing. Most of the areas contain a relatively well -compacted foot path without grass cover due to constant pedestrian activity. Further, the pervious area can be categorized as a non -improved surface consisting of dirt, rocks and grass -type vegetation. The new sidewalk will drain toward the roadway curb over a grassed filter strip that will be a minimum of 3-feet wide, if not wider in some areas. The project site is 60.34 acres and abutting single family homes The technical guidance manual, Complying with the Edwards Aquifer Rules, indicates that 80% of the increase in Total Suspended Solids (TSS) resulting from development must be removed. Chapter 3, Section 3.4.6, outlines the requirements for using an engineered filter strip. One of the stipulations for the filter strip is that the contributing drainage area does not exceed 72ft. in width (direction of flow), and that the sheet flow leaving the Impervious Cover (I.C.) is directed across a 15 ft. wide filter strip. It is implied that this 15ft. Vegetative Filter Strip (V.F.S.) can successfully treat up to 72ft. of roadway (in the direction of flow). One of the assumptions for an effective V.F.S. is that the storm water runoff does not become organized and concentrated. It should be noted that the residential homes in the Chisolm Valley Subdivision are typically flat upstream from the proposed sidewalk areas. Assuming that Figure 3-21 below (Example of Filter Strip along Roadway), from TCEQ's Complying with the Edwards Aquifer Rules, can be proportioned to meet the parameters of our sidewalk, then the correlation will verify how a 3ft. V.F.S. will effectively provide equivalent water quality protection. Using the relationship referenced in the previous paragraph, we can determine the minimum required width V F S. for a 4ft. sidewalk. I. C•rdwy 1. Csw = (7. F. S.Sw� Where: 1.C.mwy = Width of Impervious Cover due to roadway (ft.) 1.C.sw = Width of Impervious Cover due to sidewalk (ft.) V.F.S." = Width of Pervious Cover required by roadway (ft.) V.F.S.sw = Width of Pervious Cover required by sidewalk (ft.) Then: 72ft _ 4ft (15fd — (V.F.TZ) Therefore, a 4 ft sidewalk only requires a 0.83 ft V.F.S. for successful treatment. Max Width 72 R Roadway 1 1 Filter Stnp Min strip dimension 15 N Figure 3-21 Example of Filter Strip along Roadway Further, a sidewalk path, unlike a roadway, will have no vehicle traffic to either generate, or mobilize, pollutants; the concentrations of TSS in runoff from sidewalks will innately be lower than those observed in roadway runoff. Additionally, the Manual indicates that an increase in TSS is assumed to occur only due to new impervious cover. While the new concrete sidewalks will be new impervious cover, it is reasonable to assume that the new sidewalk will not substantially increase TSS concentration, since the sidewalk will effectively be replacing compacted, exposed, foot paths already exhibiting I.C. characteristics. Ultimately, the proportional relationship shows how a 3-foot vegetated filter strip, abutting the entire length of the sidewalk, will exceed the requirements for equivalent water quality protection. This relationship, coupled with the aforementioned arguments of innately reduced TSS runoff from a sidewalk, provide the foundation for the exception request. Temporary Stormwater (Section 5) Temporary Stormwater Section Texas Commission on Environmental Quality for Regulated Activities on the Edwards Aquifer Recharge Zone and Relating to 30 TAC §213.5(b)(4)(A), (B), (D)(1) and (G); Effective June 1, 1999 To ensure that the application is administratively complete, confirm that all fields in the form are complete, verify that all requested information is provided, consistently reference the some site and contact person in all forms in the application, and ensure forms are signed by the appropriate party. Note: Including all the information requested in the form and attachments contributes to more streamlined technical reviews. Signature To the best of my knowledge, the responses to this form accurately reflect all information requested concerning the proposed regulated activities and methods to protect the Edwards Aquifer. This Temporary Stormwater Section is hereby submitted for TCEQ review and executive director approval. The application was prepared by: Print Name of Customer/Agent: Gary Hudder Date:Z 2 Signature of Customer/Agent: Regulate 7ntity Name: 2021 CDBG Sidewalk Project - Chisholm Valley Subdivision Project Information Potential Sources of Contamination Examples: Fuel storage and use, chemical storage and use, use of asphaltic products, construction vehicles tracking onto public roads, and existing solid waste. 1. Fuels for construction equipment and hazardous substances which will be used during construction: ❑ The following fuels and/or hazardous substances will be stored on the site: These fuels and/or hazardous substances will be stored in: ❑ Aboveground storage tanks with a cumulative storage capacity of less than 250 gallons will be stored on the site for less than one (1) year. 1 of 5 TCEQ-0602 (Rev. 02-11-15) ❑ Aboveground storage tanks with a cumulative storage capacity between 250 gallons and 499 gallons will be stored on the site for less than one (1) year. ❑ Aboveground storage tanks with a cumulative storage capacity of 500 gallons or more will be stored on the site. An Aboveground Storage Tank Facility Plan application must be submitted to the appropriate regional office of the TCEQ prior to moving the tanks onto the project. ® Fuels and hazardous substances will not be stored on the site. 2. ® Attachment A - Spill Response Actions. A site specific description of the measures to be taken to contain any spill of hydrocarbons or hazardous substances is attached. 3. ® Temporary aboveground storage tank systems of 250 gallons or more cumulative storage capacity must be located a minimum horizontal distance of 150 feet from any domestic, industrial, irrigation, or public water supply well, or other sensitive feature. 4. ® Attachment B - Potential Sources of Contamination. A description of any activities or processes which may be a potential source of contamination affecting surface water quality is attached. Sequence of Construction 5. ® Attachment C - Sequence of Major Activities. A description of the sequence of major activities which will disturb soils for major portions of the site (grubbing, excavation, grading, utilities, and infrastructure installation) is attached. ® For each activity described, an estimate (in acres) of the total area of the site to be disturbed by each activity is given. ® For each activity described, include a description of appropriate temporary control measures and the general timing (or sequence) during the construction process that the measures will be implemented. 6. ® Name the receiving water(s) at or near the site which will be disturbed or which will receive discharges from disturbed areas of the project: Lake Creek - Brushy Creek Temporary Best Management Practices (TBMPs) Erosion control examples: tree protection, interceptor swales, level spreaders, outlet stabilization, blankets or matting, mulch, and sod. Sediment control examples: stabilized construction exit, silt fence, filter dikes, rock berms, buffer strips, sediment traps, and sediment basins. Please refer to the Technical Guidance Manual for guidelines and specifications. All structural BMPs must be shown on the site plan. 7. ® Attachment D —Temporary Best Management Practices and Measures. TBMPs and measures will prevent pollution of surface water, groundwater, and stormwater. The construction -phase BMPs for erosion and sediment controls have been designed to retain sediment on site to the extent practicable. The following information is attached: 2of5 TCEQ-0602 (Rev. 02-11-15) ® A description of how BMPs and measures will prevent pollution of surface water, groundwater or stormwater that originates upgradient from the site and flows across the site. ® A description of how BMPs and measures will prevent pollution of surface water or groundwater that originates on -site or flows off site, including pollution caused by contaminated stormwater runoff from the site. ® A description of how BMPs and measures will prevent pollutants from entering surface streams, sensitive features, or the aquifer. ® A description of how, to the maximum extent practicable, BMPs and measures will maintain flow to naturally -occurring sensitive features identified in either the geologic assessment, TCEQ inspections, or during excavation, blasting, or construction. S. ❑ The temporary sealing of a naturally -occurring sensitive feature which accepts recharge to the Edwards Aquifer as a temporary pollution abatement measure during active construction should be avoided. ❑ Attachment E - Request to Temporarily Seal a Feature. A request to temporarily seal a feature is attached. The request includes justification as to why no reasonable and practicable alternative exists for each feature. ® There will be no temporary sealing of naturally -occurring sensitive features on the site. 9. ® Attachment F - Structural Practices. A description of the structural practices that will be used to divert flows away from exposed soils, to store flows, or to otherwise limit runoff discharge of pollutants from exposed areas of the site is attached. Placement of structural practices in floodplains has been avoided. 10. ® Attachment G - Drainage Area Map. A drainage area map supporting the following requirements is attached: ❑ For areas that will have more than 10 acres within a common drainage area disturbed at one time, a sediment basin will be provided. ❑ For areas that will have more than 10 acres within a common drainage area disturbed at one time, a smaller sediment basin and/or sediment trap(s) will be used. ❑ For areas that will have more than 10 acres within a common drainage area disturbed at one time, a sediment basin or other equivalent controls are not attainable, but other TBMPs and measures will be used in combination to protect down slope and side slope boundaries of the construction area. ❑ There are no areas greater than 10 acres within a common drainage area that will be disturbed at one time. A smaller sediment basin and/or sediment trap(s) will be used in combination with other erosion and sediment controls within each disturbed drainage area. 3 of 5 TCEQ-0602 (Rev. 02-11-15) ® There are no areas greater than 10 acres within a common drainage area that will be disturbed at one time. Erosion and sediment controls other than sediment basins or sediment traps within each disturbed drainage area will be used. 11. Attachment W - Temporary Sediment Pond(s) Plans and Calculations. Temporary sediment pond or basin construction plans and design calculations for a proposed temporary BMP or measure have been prepared by or under the direct supervision of a Texas Licensed Professional Engineer. All construction plans and design information must be signed, sealed, and dated by the Texas Licensed Professional Engineer. Construction plans for the proposed temporary BMPs and measures are attached. ® N/A 12. ® Attachment I - Inspection and Maintenance for BMPs. A plan for the inspection of each temporary BMP(s) and measure(s) and for their timely maintenance, repairs, and, if necessary, retrofit is attached. A description of the documentation procedures, recordkeeping practices, and inspection frequency are included in the plan and are specific to the site and/or BMP. 13. ® All control measures must be properly selected, installed, and maintained in accordance with the manufacturer's specifications and good engineering practices. If periodic inspections by the applicant or the executive director, or other information indicate a control has been used inappropriately, or incorrectly, the applicant must replace or modify the control for site situations. 14. ® If sediment escapes the construction site, off -site accumulations of sediment must be removed at a frequency sufficient to minimize offsite impacts to water quality (e.g., fugitive sediment in street being washed into surface streams or sensitive features by the next rain). 15. ® Sediment must be removed from sediment traps or sedimentation ponds not later than when design capacity has been reduced by 50%. A permanent stake will be provided that can indicate when the sediment occupies 50% of the basin volume. 16. ® Litter, construction debris, and construction chemicals exposed to stormwater shall be prevented from becoming a pollutant source for stormwater discharges (e.g., screening outfalls, picked up daily). Soil Stabilization Practices Examples: establishment of temporary vegetation, establishment of permanent vegetation, mulching, geotextiles, sod stabilization, vegetative buffer strips, protection of trees, or preservation of mature vegetation. 17. ® Attachment 1- Schedule of Interim and Permanent Soil Stabilization Practices. A schedule of the interim and permanent soil stabilization practices for the site is attached. 4 of 5 TCEQ-0602 (Rev. 02-11-15) 18. ® Records must be kept at the site of the dates when major grading activities occur, the dates when construction activities temporarily or permanently cease on a portion of the site, and the dates when stabilization measures are initiated. 19. ® Stabilization practices must be initiated as soon as practicable where construction activities have temporarily or permanently ceased. Administrative Information 20. ® All structural controls will be inspected and maintained according to the submitted and approved operation and maintenance plan for the project. 21. ® If any geologic or manmade features, such as caves, faults, sinkholes, etc., are discovered, all regulated activities near the feature will be immediately suspended. The appropriate TCEQ Regional Office shall be immediately notified. Regulated activities must cease and not continue until the TCEQ has reviewed and approved the methods proposed to protect the aquifer from any adverse impacts. 22. ® Silt fences, diversion berms, and other temporary erosion and sediment controls will be constructed and maintained as appropriate to prevent pollutants from entering sensitive features discovered during construction. 5 of 5 TCEQ-0602 (Rev. 02-11-15) Temporary Stormwater Section Attachment A — Spill Response Actions (2021 CDBG Sidewalk Project — Chisholm Valley Subdivision On -site storage of fuel and hazardous substances is not anticipated. If the construction necessitates the on -site presence of small amounts of hazardous construction materials, the contractor will be required to keep the materials in proper containers and in such a manner to prevent spills. Liquid containers will be kept closed. All spills will be immediately addressed and all contaminated material placed into a proper container designed for transporting the hazardous materials. Containers will be sent to an approved hazardous materials site for proper disposal. Also, City fire stations have hazmat trained personnel on duty. The TCEQ will be contacted immediately as to the type and nature of any significant hazardous materials spills. The TCEQ will be notified as to the destination and travel days of any contaminated material. Temporary Stormwater Section Attachment B — Potential Sources of Contamination - (2021 CDBG Sidewalk Project — Chisholm Valley Subdivision) 1. Sediment tracked, or washed, from on -site stockpiles of disturbed soils. 2. Sediment tracked, or washed, from disturbed areas where proposed sidewalk construction is to occur. 3. Fluid spills due to malfunction of construction vehicles. 4. Wash out from concrete trucks. Temporary Stormwater Section Attachment C — Sequence of Construction (2021 CDBG Sidewalk Project — Chisholm Valley Subdivision 1. Install traffic control. • Area to be disturbed: (0 ac). 2. Install curb inlet protection and erosion control logs along back of curb: Leave in -place until 80% vegetative cover has been established. • Area to be disturbed (0 ac). 3. Saw cut driveways not ADA compliant • Area to be disturbed (+1- 0.103 ac). 4. Excavate for new sidewalk. • Area to be disturbed (+1- 0.48 ac). 5. Construct Driveways up to ROW. • Replace existing impervious cover (+1- 0.05 ac). 6. Construct sidewalk (+I- 0.48 acres of additional impervious cover). 7. Remove forms and replace backfill. a Area to be disturbed (0 ac). 8. Install top soil and sod disturbed/exposed areas as required. • Area to be disturbed (0 ac). 9. Remove all temporary control measures once vegetative cover has been established. • Area to be disturbed (0 ac). Temporary Stormwater Section Attachment D Temporary Best Management Practices and Measures (TBMP's) (2021 CDBG Sidewalk Project — Chisholm Valley Subdivision) The 2021 CDBG Sidewalk Project — Chisholm Valley Subdivision will be completed in a reasonably short period of time due to the geometry and physical layout of the sidewalk. This project calls for narrow and linear flatwork-type construction, which significantly helps to expedite the work. Consequently, the most effective Temporary Best Management Practices for this project would be to provide "good -housekeeping". "Good -housekeeping" requires the contractor to clean the abutting street at least once a day, and as needed throughout the entirety of the contract. The contractor will also be required to keep any stock piles within an approved protective barrier to prevent material from running off of the construction site. If a rainfall event is imminent, the contractor will be required to take appropriate action to prevent pollutants from leaving the construction area. Inlet protection and erosion control logs will be established. These measures will be inspected weekly and after significant rainfall events for effectiveness. Sediments captured by these measures will be removed and properly disposed. The contract for the construction will require final placement of topsoil and placement of hydraulic seed planting (hydro -mulch), or sod, within fourteen calendar days following removal of sidewalk forms. The contract will also allow for halting of excavation for new sidewalk if the aforementioned fourteen calendar day requirement is exceeded. Any upgradient stormwater would be overland flow of rainwater from existing grassed areas. Fiber rolls, or erosion control logs, will be staked along the edges of the disturbed area to intercept any runoff and provide for removal of sediment, and potentially reduce erosion. The designated concrete washout area will be located a minimum of 50 feet from any sensitive features. The washout area, whether excavated or above ground, will adhere to the requirements set out in section 1.4.18 of the manual, Complying with the Edwards Aquifer Rules Technical Guidance on Best Management Practices. Temporary Stormwater Section Attachment F — Structural Practices (2021 CDBG Sidewalk Project — Chisholm Valley Subdivision) Any upgradient stormwater would be overland flow of rainwater from existing grassed areas. Fiber rolls, or erosion control logs, will be staked along the edges of the disturbed area to intercept any runoff and provide for removal of sediment, and potentially reduce erosion. �J * ! +! �10�frt�`r .'.lam# • EMPTIES TO Y CREEK BRUSH C}�board , C fS� r RrrA. 0 qu, r r ✓ + k IOU - r` - yucca Dr--sfy.r•+o•►-" .!' • i'i • { 1Q''G>l�I�Iy=�.T ��y ■ f- ;P R-- ice* �,/ .I , kv- ji i', ' r� �r,-,P,urple;Sage�Dr. �� p 1 -N Al +1� � (0�•3/� }t A•�fli�4�' A ��y~y+i:- 4' {J, -� �S ,f '. Dt CURB INLET 780' �S, . K' 0 • - i to- ' ,� �,� ♦4� t# 2� CURB INLET '1' CURB INLET •+ f � Lr3� N � .u• ��.. � ry�}� y ��F - 6 ✓� °� ^ � F 82fi P*rF M • C4 CL $4e a5� N,�,...........................:.*.� Symbology �,� •�ti 8 Jf� +.^q +/ MATTHEW BUSHAK A0, Drainage Path fy - h f a0 yam . ■:. • r........... •..................%...� ROW Extent g5$* 18 • '!: 81480 Elevation {ft) oTVLrll; loPies, I, _ ;�(1S S �i`�t`�C�G`E1iS�O,•�� 0 Parceis 826 820 814 815 81$ N ig Attachment G - Drainage Area Man N Temporary Stormwater Section Attachment I — Inspection and Maintenance for BMP's 202{ 1 CDBG Sidewalk Project — Chisholm Valley Subdivision) All temporary erosion and sedimentation control measures will be inspected upon installation, weekly and after any significant rainfall event. All areas under construction will be inspected daily to ensure that streets are kept clean and that best practices are being implemented to prevent and/or capture release of sediments from the construction areas. Below are the specifications related with the proposed temporary erosion and sedimentation controls proposed for the 2021 CDBG Sidewalk Project — Chisholm Valley Subdivision. Curb Inlet Protection (CORR Detail EC-13): 1. Erosion control log containment mesh shall be 100% biodegradable, photodegradable or recyclable; and fill material shall consist of mulch, aspen excelsior fibers, chipped site vegetation, coconut fibers, 100% recyclable fibers, or any other acceptable material excluding straw and hay. 2. Daily inspection shall be made by the contractor and silt accumulation must be removed when depth reaches 2". 3. Contractor shall monitor the performance of inlet protection during each rainfall event and immediately remove the inlet protections if the storm -water begins to overtop the curb. 4. Inlet protections shall be removed as soon as the source of sediment is stabilized. Erosion Control Loa (CORR Detail EC-17): 1. Daily inspection shall be made by the contractor and silt accumulation must be removed when depth reaches 6". 2. Contractor shall monitor the performance of logs during rainfall event for proper performance. 3. Logs shall consist of 100% biodegradable, photodegradable or recyclable containment mesh stuffed with filter material. 4. Stuff logs with sufficient filter material to achieve density that will hold shape without excessive deformation. Filter material shall consist of mulch, aspen excelsior wood fibers, chipped site vegetation, coconut fibers 100% recyclable fibers, or any other acceptable material, excluding straw and hay. 5. Stakes shall be 2" x 2" wood, 4' long, embedded such that 2" protrudes above log, or as directed. Temporary Stormwater Section Attachment J — Schedule of Interim and Permanent Soil Stabilization Practices (2021 CDBG Sidewalk Project — Chisholm Valley Subdivision) Permanent soil stabilization practices will be used, including the use of sod and/or seed to establish permanent vegetation. Stabilization measures will be implemented within fourteen calendar days following completion of each individual sidewalk gap or sections. Permanent Stormwater (Section 6) Permanent Stormwater Section Texas Commission on Environmental Quality for Regulated Activities on the Edwards Aquifer Recharge Zone and Relating to 30 TAC §213.5(b)(4)(C), (D)(li), (E), and (5), Effective June 1, 1999 To ensure that the application is administratively complete, confirm that all fields in the form are complete, verify that all requested information is provided, consistently reference the some site and contact person in all forms in the application, and ensure forms are signed by the appropriate party. Note: Including all the information requested in the form and attachments contributes to more streamlined technical reviews. Signature To the best of my knowledge, the responses to this form accurately reflect all information requested concerning the proposed regulated activities and methods to protect the Edwards Aquifer. This Permanent Stormwater Section is hereby submitted for TCEQ review and executive director approval. The application was prepared by: Print Name of Cus Omer/Agent: Gary Hudder Date: 2, Signature of Customer/Agent RegulatedIntity Name: 2021 CDBG Sidewalk Project - Chisholm Valley Subdivision Permanent Best Manacyement Practices (BMPs) Permanent best management practices and measures that will be used during and after construction is completed. 1. X❑ Permanent BMPs and measures must be implemented to control the discharge of pollution from regulated activities after the completion of construction. ❑ N/A 2. X❑ These practices and measures have been designed, and will be constructed, operated, and maintained to insure that 80% of the incremental increase in the annual mass loading of total suspended solids (TSS) from the site caused by the regulated activity is removed. These quantities have been calculated in accordance with technical guidance prepared or accepted by the executive director. X❑ The TCEQ Technical Guidance Manual (TGM) was used to design permanent BMPs and measures for this site. 1 of 4 TCEQ-0600 (Rev. 02-11-15) ❑ A technical guidance other than the TCEQTGM was used to design permanent BMPs and measures for this site. The complete citation for the technical guidance that was used is: ❑ NIA 3. ® Owners must insure that permanent BMPs and measures are constructed and function as designed. A Texas Licensed Professional Engineer must certify in writing that the permanent BMPs or measures were constructed as designed. The certification letter must be submitted to the appropriate regional office within 30 days of site completion. ❑ N/A 4. Where a site is used for low density single-family residential development and has 20 % or less impervious cover, other permanent BMPs are not required. This exemption from permanent BMPs must be recorded in the county deed records, with a notice that if the percent impervious cover increases above 20% or land use changes, the exemption for the whole site as described in the property boundaries required by 30 TAC §213.4(g) (relating to Application Processing and Approval), may no longer apply and the property owner must notify the appropriate regional office of these changes. ❑ The site will be used for low density single-family residential development and has 20% or less impervious cover. ® The site will be used for low density single-family residential development but has more than 20% impervious cover. ❑ The site will not be used for low density single-family residential development. 5. The executive director may waive the requirement for other permanent BMPs for multi- family residential developments, schools, or small business sites where 20% or less impervious cover is used at the site. This exemption from permanent BMPs must be recorded in the county deed records, with a notice that if the percent impervious cover increases above 20% or land use changes, the exemption for the whole site as described in the property boundaries required by 30 TAC §213.4(g) (relating to Application Processing and Approval), may no longer apply and the property owner must notify the appropriate regional office of these changes. ❑ Attachment A - 20% or Less Impervious Cover Waiver. The site will be used for multi -family residential developments, schools, or small business sites and has 20% or less impervious cover. A request to waive the requirements for other permanent BMPs and measures is attached. ❑ The site will be used for multi -family residential developments, schools, or small business sites but has more than 20% impervious cover. ® The site will not be used for multi -family residential developments, schools, or small business sites. 6. ® Attachment B - BMPs for Upgradient Stormwater. 2 of 4 TCEQ-0600 (Rev. 02-11-15) ® A description of the BMPs and measures that will be used to prevent pollution of surface water, groundwater, or stormwater that originates upgradient from the site and flows across the site is attached. ❑ No surface water, groundwater or stormwater originates upgradient from the site and flows across the site, and an explanation is attached. ❑ Permanent BMPs or measures are not required to prevent pollution of surface water, groundwater, or stormwater that originates upgradient from the site and flows across the site, and an explanation is attached. 7. ® Attachment C - BMPs for On -site Stormwater. ® A description of the BMPs and measures that will be used to prevent pollution of surface water or groundwater that originates on -site or flows off the site, including pollution caused by contaminated stormwater runoff from the site is attached. ❑ Permanent BMPs or measures are not required to prevent pollution of surface water or groundwater that originates on -site or flows off the site, including pollution caused by contaminated stormwater runoff, and an explanation is attached. 8. ❑ Attachment D - BMPs for Surface Streams. A description of the BMPs and measures that prevent pollutants from entering surface streams, sensitive features, or the aquifer is attached. Each feature identified in the Geologic Assessment as sensitive has been addressed. ® N/A 9. ® The applicant understands that to the extent practicable, BMPs and measures must maintain flow to naturally occurring sensitive features identified in either the geologic assessment, executive director review, or during excavation, blasting, or construction. ® The permanent sealing of or diversion of flow from a naturally -occurring sensitive feature that accepts recharge to the Edwards Aquifer as a permanent pollution abatement measure has not been proposed. ❑ Attachment E - Request to Seal Features. A request to seal a naturally -occurring sensitive feature, that includes, for each feature, a justification as to why no reasonable and practicable alternative exists, is attached. 10. ® Attachment F - Construction Plans. All construction plans and design calculations for the proposed permanent BMP(s) and measures have been prepared by or under the direct supervision of a Texas Licensed Professional Engineer, and are signed, sealed, and dated. The plans are attached and, if applicable include: ❑ Design calculations (TSS removal calculations) ® TCEQ construction notes ❑ All geologic features ® All proposed structural BMP(s) plans and specifications ❑ N/A 3 of 4 TCEQ-0600 (Rev. 02-11-15) 11. ® Attachment G - Inspection, Maintenance, Repair and Retrofit Plan. A plan for the inspection, maintenance, repairs, and, if necessary, retrofit of the permanent BMPs and measures is attached. The plan includes all of the following: ® Prepared and certified by the engineer designing the permanent BMPs and measures ® Signed by the owner or responsible party ® Procedures for documenting inspections, maintenance, repairs, and, if necessary retrofit ® A discussion of record keeping procedures ❑ N/A 12. ❑ Attachment H - Pilot -Scale Field Testing Plan. Pilot studies for BMPs that are not recognized by the Executive Director require prior approval from the TCEQ. A plan for pilot -scale field testing is attached. ® N/A 13. ❑ Attachment I -Measures for Minimizing Surface Stream Contamination. A description of the measures that will be used to avoid or minimize surface stream contamination and changes in the way in which water enters a stream as a result of the construction and development is attached. The measures address increased stream flashing, the creation of stronger flows and in -stream velocities, and other in -stream effects caused by the regulated activity, which increase erosion that results in water quality degradation. ® N/A Responsibility for Maintenance of Permanent BMP(s) Responsibility for maintenance of best management practices and measures after construction is complete. 14. ® The applicant is responsible for maintaining the permanent BMPs after construction until such time as the maintenance obligation is either assumed in writing by another entity having ownership or control of the property (such as without limitation, an owner's association, a new property owner or lessee, a district, or municipality) or the ownership of the property is transferred to the entity. Such entity shall then be responsible for maintenance until another entity assumes such obligations in writing or ownership is transferred. ❑ N/A 15. ® A copy of the transfer of responsibility must be filed with the executive director at the appropriate regional office within 30 days of the transfer if the site is for use as a multiple single-family residential development, a multi -family residential development, or a non-residential development such as commercial, industrial, institutional, schools, and other sites where regulated activities occur. ❑ N/A 4 of 4 TCEQ-0600 (Rev. 02-11-15) Permanent Stormwater Section Attachment B - BMP's for Upgradient Stormwater (2021 CDBG Sidewalk Project - Chisholm Valley Subdivision) The small, localize localized areas where the new sidewalk construction is planned currently receive overland flow of rainwater from portions of upgradient property. Any such upgradient property is grassed or otherwise undeveloped. The overland flow from upgradient property will continue after construction of the sidewalks unless modifications occur to the upgradient property at some future date. Because the upgradient areas are grassed or otherwise undeveloped, the 3 to 5 ft. wide Vegetative Filter Strips described in the Exception Request Form, Attachment B, will be the only BMPs necessary to prevent pollution of the stormwater originating from the areas. Permanent Stormwater Section Attachment C — BMP's for On -site Stormwater 2021 CDBG Sidewalk Project — Chisholm Valley Subdivision As discussed in Attachment B of the Exception Request Form, the new sidewalks will drain across a 3ft. grassed strip, minimum, to provide water quality protection equivalent to that provided by a vegetated filter strip as described in the technical guidance manual Complying with the Edwards Aquifer Rules. Attachment F Construction Plans Form TCEQ-0600 ATTACHMENT G Inspection, Maintenance Plan and Schedule for Permanent Erosion Controls Vegetative Filter Strip PROJECT NAME 2021 CDBG Sidewalk Proiect —Chisholm Valley Subdivision LOCATION The regulated project site will stretch along Wagon Gap Drive, Dry Creek Drive, Old West Drive, Rawhide Drive, Old West Place, Purple Sage Drive and Yucca Drive from the limits of Hesters Crossing Road and Chisholm Valley Drive within the Chisholm Valley Subdivision. The Chisholm Valley Subdivision is located just west of Interstate 35 and iust south of McNeil Road, CITY, STATE ZIP Round Rock Texas 78664 Vegetative Filter Strip: Seasonal Mowing -The vegetative filter strip shall be mowed as needed to limit vegetation And Lawn Care: to a height of 6", using a mulching mower for removal of clippings). Remove all accumulation of trash and debris prior to mowing. -Weed and insect control practices shall also be implemented as needed; however, herbicide use should be kept to a minimum. -The vegetative filter strip shall be kept free of debris and litter. -Vegetative filter strip area must have at least 80% vegetated cover and re- seeded as necessary. Semi -Annual -Inspection and provide maintenance for the vegetative filter strip at least twice Inspection: annually and after heavy runoff for: • Erosion, channelization or damage to vegetation. Bare spots and areas of erosion or channelization identified during inspections must be filled, compacted and re -seeded such that a uniform grass cover is reestablished. • Ensure upgradient and downgradient curb cuts are free of debris and litter. • Remove excess sediment buildup of at least 3 inches at any spot or which covers vegetation. Heavy machinery shall not be used for sediment removal. Re -seed any damaged areas during the sediment removal process using the same seed mix used during construction. Provide soil stabilization methods as required during the re -vegetation process. Page 1 of 2 Documentation: All activity performed on the vegetative filter strip shall be maintained in one consolidated file which indicates, at minimum: + Inspection/Maintenance Date • Indication all items presented above have been checked • Description of any maintenance items provided + Expected date of next inspection An amended copy of this document will be provided to the TCEQ within thirty (30) days of any changes in the following information. Responsible Party for Maintenance Contact Person Address City, State Zip Telephone Number Signature of Responsible Party City of Round Rock GantHudder 3400 Sunrise Road Round Rock, Texas 78665 (512) 218 - 5560 Page 2 of 2 Agent Authorization Form (Section 7) Agent Authorization Form For Required Signature Edwards Aquifer Protection Program Relating to 30 TAC Chapter 213 Efective June 1, 1999 Laurie Hadle Print Name City Manager , Title - Owner/President/Other of CitX of Round Rock Texas , Corporation/Partnership/Entity Name have authorized Gary Hudder Print Name of Agent/Engineer of _ City of Round Rock, Texas Print Name of Firm to represent and act on the behalf of the above named Corporation, Partnership, or Entity for the purpose of preparing and submitting this plan application to the Texas Commission on Environmental Quality (TCEQ) for the review and approval consideration of regulated activities. also understand that: The applicant is responsible for compliance with 30 Texas Administrative Code Chapter 213 and any condition of the TCEQ's approval letter. The TCEQ is authorized to assess administrative penalties of up to $10,000 per day per violation. 2. For those submitting an application who are not the property owner, but who have the right to control and possess the property, additional authorization is required from the owner. 3. Application fees are due and payable at the time the application is submitted. The application fee must be sent to the TCEQ cashier or to the appropriate regional office. The application will not be considered until the correct fee is received by the commission. 4. A notarized copy of the Agent Authorization Form must be provided for the person preparing the application, and this form must accompany the completed application. 5. No person shall commence any regulated activity on the Edwards Aquifer Recharge Zone, Contributing Zone or Transition Zone until the appropriate application for the activity has been filed with and approved by the Executive Director. TCEQ-0599 (Rev.04101l2010) Page 1 of 2 SIGNATURE PAGE: Applicant's SigMature THE STATE OF� § County of �§ Date BEFORE ME, the undersigned authority, on this day personally appeared/d(tO�Aknown to me to be the person whose name is subscribed to the foregoing instrument, and ackno edged to me that (s)he executed same for the purpose and consideration therein expressed. GIVEN under my hand and seal of office on this l Eday off NOTARY PUq)C MONtt1UE ADJIMS Aema V e Typed or Printed Name of Notary � N Nfty [DO WW.X Et3 t�W M rch 22 � MY COMMISSION EXPIRES. 2 TCEQ-0599 (Rev.0410112010) Page 2 of 2 Fee Application Form (Section 8) Application Fee Form Texas Commission on Environmental Quality Name of Proposed Regulated Entity: 2021 CDBG Sidewalk Project - Chisholm Valley Subdivision Regulated Entity Location: New Sidewalk -Chisholm Valley Subdivision Name of Customer: City of Round Rock Contact Person: Gary Hudder Phone: (512) 218-5560 Customer Reference Number (if issued):CN 600413181 Regulated Entity Reference Number (if issued):RN Austin Regional Office (3373) ❑ Hays ❑ Travis X❑ Williamson San Antonio Regional Office (3362) ❑ Bexar ❑ Medina ❑ Uvalde ❑ Comal ❑ Kinney Application fees must be paid by check, certified check, or money order, payable to the Texas Commission on Environmental Quality. Your canceled check will serve as your receipt. This form must be submitted with your fee payment. This payment is being submitted to: X❑ Austin Regional Office ❑ San Antonio Regional Office ❑ Mailed to: TCEQ - Cashier ❑ Overnight Delivery to: TCEQ - Cashier Revenues Section 12100 Park 35 Circle Mail Code 214 Building A, 3rd Floor P.O. Box 13088 Austin, TX 78753 Austin, TX 78711-3088 (512)239-0357 Site Location (Check All That Apply): X❑ Recharge Zone ❑ Contributing Zone [] Transition Zone Type of Plan Size Fee Due Water Pollution Abatement Plan, Contributing Zone Plan: One Single Family Residential Dwelling Acres Acres Acres $ Water Pollution Abatement Plan, Contributing Zone Plan: Multiple Single Family Residential and Parks $ Water Pollution Abatement Plan, Contributing Zone Plan: Non-residential $ Sewage Collection System L.F. $ Lift Stations without sewer lines Acres $ Underground or Aboveground Storage Tank Facility Tanks $ Piping System(s)(only) Each $ Exception Each $ 500 Extension of Time Each $ Signature: Date: z- 1 of 2 TCEQ-0574 (Rev. 02-24-15) Application Fee Schedule Texas Commission on Environmental Quality Edwards Aquifer Protection Program 30 TAC Chapter 213 (effective 05/01/2008) Water Pollution Abatement Plans and Modifications Contributing Zone Plans and Modifications Project Area in Project Acres Fee One Single Family Residential Dwelling < 5 $650 $1,500 Multiple Single Family Residential and Parks < 5 5 < 10 $3,000 10 < 40 $4,000 40 < 100 $6,500 100 < 500 $8,000 >_ 500 $10,000 Non-residential (Commercial, industrial, institutional, < 1 $3,000 multi -family residential, schools, and other sites 1 < 5 $4,000 where regulated activities will occur) 5 < 10 $5,000 10 < 40 $6,500 40 < 100 $8,000 >_ 100 $10,000 Organized Sewage Collection Svstems and Medifitatiens Project Cost per Linear Foot Minimum Fee - Maximum Fee Sewage Collection Systems $0.50 $650 - $6,500 Underground and Aboveground Storage Tank System Facility Plans and Modifications Project Cost per Tank or Piping System Minimum Fee - Maximum Fee Underground and Aboveground Storage Tank Facility $650 $650 - $6,500 Exception Requests Project Fee Exception Request $500 Extension of Time Requests Project Fee Extension of Time Request $150 2 of 2 TCEQ-0574 (Rev. 02-24-15) TCEQ Check (Section 9) Core Data Form (Section 10) TCEQ Use Only TCEQ Core Data Form For detailed instructions regarding completion of this form, please read the Core Data Form Instructions or call 512-239-5175. SECTION I: General Information 1. Reason for Submission (If other is checked please describe in space provided.) ® New Permit, Registration or Authorization (Core Data Form should be submitted with the program application.) ❑ Renewal (Core Data Form should be submitted with the renewal form) ❑ Other 2. Customer Reference Number if issued Follow this link to search 3. Regulated Entity Reference Number if issued for CN or RN numbers in CN 600413181 Central Registry" RN SECTION 11: Customer Information 4. General Customer Information 5. Effective Date for Customer Information Updates (mmlddlyyyy) 611 /2022 ❑ New Customer ® Update to Customer Information ❑ Change in Regulated Entity Ownership []Change in Legal Name (Verifiable with the Texas Secretary of State or Texas Comptroller of Public Accounts) The Customer Name submitted here may be updated automatically based on what is current and active with the Texas Secretary of State (SOS) or Texas Comptroller of Public Accounts (CPA). 6. Customer Legal Name (if an individual, print last name first: eg: Doe, John) if new Customer, enter previous Customer below: City of Round Rock N.A 7. TX SOSICPA Filing Number 8. TX State Tax ID (lt digits) 9. Federal Tax ID (9 digits) 74-601748 10. DUNS Number (irapoicaue) 102740792 11. Type of Customer: Corporation Ej Individual Partnership: ❑ General ❑ Limited Government: ® City ❑ County ❑ Federal ❑ State ❑ other ❑ Sole Proprietorship ❑ Other: 12. Number of Employees ❑ 0-20 ❑ 21-100 ❑ 101-250 ❑ 251-500 ® 501 and higher 13. Independently Owned and Operated? I ® Yes ❑ No 14. Customer Role ( Proposed or Actual) - as it relates to the Regulated Entity listed on this form. Please check one of the following ❑Owner ❑ Operator ❑ Owner & Operator ❑Occupational Licensee ❑ Responsible Party ❑ Voluntary Cleanup Applicant ❑Other: City of Round Rock 15. Mailing Address: 3400 Sunrise Rd City Round Rock State I TX ZIP 78665 ZIP+4 16. Country Mailing Information (ifoufside usA) 17. E•Mail Address (ifappticabie) ghudder@roundrocktexas.gov 18. Telephone Number ( 512 ) 218-7044 19. Extension or Code 20. Fax Number (if applicable) ( 512 ) 230-8714 SECTION III: Regulated Entity Information 21. General Regulated Entity Information (if 'New Regulated Entity" is selected below this form should be accompanied by a permit application) ® New Regulated Entity ❑ Update to Regulated Entity Name ❑ Update to Regulated Entity Information The Regulated Entity Name submitted may be updated in order to meet TCEQ Agency Data Standards (removal of organizational endings such as Inc, LP, or LLC . 22. Regulated Entity Name (Enter name of the site where the regulated action is taking place.) 2021 CDBG Sidewalk Project - Chisholm Valley Subdivision TCEQ-10400 102121) Page 1 of 3 None Assigned (Within Public Right -of -Way at various locations) 23. Street Address of the Regulated Entity: City Round Rock State TX ZIP 78664 ZIP + 4 (No PO Boxes) 24.County Williamson Enter Physical Location Description if no street address is provided. 25. Description to Physical Location: The regulated site is within the Chisholm Valley Subdivision which is located west of IH 35 between McNiel Rd and Hesters Crossing 26. Nearest City State Nearest ZIP Code Round Rock TX 78664 27. Latitude (N) In Decimal: 28. Longitude (W) In Decimal: D29rees Minutes Seconds Degrees Minutes Seconds 29. Primary SIC Code (4 digits) 30. Secondary SIC Code (4 digits) 31. Primary NAICS Code 32. Secondary NAICS Code 5 or 6 digits) (5 or 6 digits) 1611 237310 33. What is the Primary Business of this entity? (Do not repeat the SIC or NAICS descriplion.) Sidewalk for pedestrians 34. Mailing Address: 3400 Sunrise Rd City I Round Rock State TX I ZIP 78665 ZIP + 4 35. E-Mail Address: I ghudder@roundrocktexas.gov 36. Telephone Number 37. Extension or Code 38. Fax Number(it applicable) (512) 218.7044 1 1 (512) 230.8714 39. TCEQ Programs and ID Numbers Check all Programs and write in the permits/registration numbers that will be affected by the updates submitted on this form. See the Core Data Form instructions for additional guidance. ❑ Dam Safety ❑ Districts ® Edwards Aquifer ❑ Emissions Inventory Air ❑ Industrial Hazardous Waste ❑ Municipal Solid Waste ❑ New Source Review Air ❑ OSSF ❑ Petroleum Storage Tank ❑ PWS ❑ Sludge ❑ Storm Water ❑ Title V Air ❑ Tires ❑ Used Oil ❑ Voluntary Cleanup ❑ Waste Water ❑ Wastewater Agriculture ❑ Water Rights ❑ Other: SECTION_ IV: Preparer Information 40. Name: Matthew Bushak, PE 41. Title: Senior Transportation Engineer 42. Telephone Number 43. Ext./Code 44. Fax Number 45. E-Mail Address ( 512 ) 341-3318 1 1 ( 512 ) 230-8714 mbushak@roundrocktexas.gov SECTION V: Authorized Sifanature 46. By my signature below, 1 certify, to the best of my kno.rledge, that the information provided in this form is true and complete, and that I have signature authority to submit this firm on behalfof the entity specified in Section 11. Field 6 and?or as required fbr the updates to the ID numbers identified in field 39. Company: City of Round Rock Job Title: I Transportation Director Name (in Print): Gary Huddler Phone: ( 512 ) 218- 5560 TCEQ-10400 (02121) Page 2 of 3 TCEQ-10400 (02/21) Page 3 of 3 ROUND ROCK City of Round Rock TEXAS Agenda Item Summary Agenda Number: Title: Consider executing a Recharge and Transition Zone Exception Request with the TCEQ for the 2021 CDBG Sidewalk Project - Chisholm Valley Subdivision. Type: City Manager Item Governing Body: City Manager Approval Agenda Date: 7/1/2022 Dept Director: Gary Hudder, Transportation Director Cost: $500.00 Indexes: General Self -Financed Construction Attachments: Application, LAF Department: Transportation Text of Legislative File CM-2022-157 The 2021 CDBG Sidewalk Project will add sidewalks to several streets within the Chisholm Valley Subdivision. It is currently under design and is planned for bidding in October 2022. The attached document is a permit application for the Texas Commission on Environmental Quality (TCEQ). The 2021 CDBG Sidewalk Project is located in the Edwards Aquifer Recharge Zone, which is regulated by the TCEQ. The application describes how storm water runoff during and after construction will be treated. This project uses standard erosion controls during construction. Post -construction runoff will be treated by the grass filter strip between the sidewalk and the curb. A similar application was submitted and approved for the 2019 CDBG Sidewalk Project, also in the Chisholm Valley Subdivision. The fee for the application is $500.00 Cost: $500.00 Source of Funds: General Self Financed Construction City of Round Bock Page 1