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HomeMy WebLinkAbout20201813 Ver 1_Stream Monitoring - Nov 23 2022_20221130®� Geotechnical • Construction Materials • Environmental • Facilities Water Quality Regional Operations Section Mooresville Regional Office, DEQ WSB Retail Partners, LLC Reference: Stream Monitoring Report for November 2022 NCDWR# 20 -1813 & 20 -1814 Smith Farms at Prosperity Village and Prosperity Ridge Road Extension Project 4840 Prosperity Church Road Charlotte, Mecklenburg County, North Carolina ECS Project Number: 49:11845 To whom it may concern: ECS SOUTHEAST, LLP "Setting the Standard for Service" NC Registered Engineering Firm F-1078 NC Registered Geologists Firm C-406 SC Registered Engineering Firm 3239 November 30, 2022 ECS Southeast, LLP (ECS) is pleased to submit this stream monitoring report for the above - referenced site. This stream monitoring report is in regards and adherence to Approvals of 401 Quality Certifications with Additional Conditions for the Smith Farms at Prosperity Village and Prosperity Ridge Road Extension Project (NCDWR 20-1813 and NCDWR 20-1814). Additional conditions under which the stream is to be monitored: "The perennial stream identified as (a) 2 on the delineation and as S1 on the application's stream table shall be monitored for a period of two years, following completion of the project. Monitoring shall be conducted 50 ft. downstream of the endpoint of the fill associated with the proposed Prosperity Road Extension with additional monitoring points at 150 ft. and at the downstream end at the property boundary to ensure that upstream fill of the watershed does not result in a secondary/cumulative impacts (loss of flow/stream). Qualitative monitoring, such as photos and other observable descriptive facts are suitable: a) Prior to construction, at least two monthly monitoring events shall occur to provide a baseline. Existing photos may also be included, but not to exclude the monitoring events. b) Upon substantial completion of the project (paving complete, runoff is utilizing the storm water system) monitoring may begin and shall occur in the suggested time frame: November, January, March, May. c) Monitoring shall not occur within 72 hours of a rain event. This information shall be submitted to the Mooresville Regional Office. [15A NCAC 02B .0211, 15ACAC 02H .0506] Justification: The entirety of the watershed that feeds this stream is being filled and covered with impervious built upon area. Rain events are diverted to stormwater BMPs, which circumvents ECS Capitol Services, PLLC • ECS Florida, LLC • ECS Mid -Atlantic, LLC • ECS Midwest, LLC • ECS Southeast, LLP • ECS Texas, LLP www.ecslimited.com Stream Monitoring Report NCDWR# 20 -1813 & 20 -1814 Smith Farms at Prosperity Village and Prosperity Ridge Road Extension Project 4840 Prosperity Church Road Charlotte, Mecklenburg County, North Carolina ECS Project Number: 49:11845 infiltration and groundwater discharge to the stream. This has the potential to impact downstream of the proposed area of impact resulting in additional loss of aquatic habitat. 2. Diversion Ditches and other storm water conveyances as related to the sediment and erosion control measures shall be matted and/or stabilized to reduce sediment loss and turbidity. This includes interior/exterior slopes of sediment basins. [15A NCAC 02H .0506 (b)(3) and (c)(3)] 3. Bare/fill slopes in excess of 10 feet in height and within 30 feet of surface waters shall be matted. [15A NCAC 02H .0506 (b)(1) and15A NCAC 02H .502 (c)] Justification: A project that affects waters shall not be permitted unless the existing uses, and the water quality to protect such uses, are protected. In determining that the proposed activity will comply with state water quality standards (including designated uses, numeric criteria, narrative criteria and the state's antidegradation policy), the Division must evaluate if the activity has avoided and minimized impacts to waters, would cause or contribute to a violation of standards or would result in secondary or cumulative impacts 4. Stormwater discharge structures at this site shall be constructed in a manner such that the potential receiving streams (of the discharge) will not be impacted due to sediment accumulations, scouring or erosion of the stream banks (15A NCAC 02B .0203). Justification: In order to protect against impairment of water quality standards and best usage of receiving and downstream waters, water quality -based management practices must be employed to protect against direct or indirect discharge of waste or other sources of water pollution." Site Monitoring Assessment ECS visited the site on November 23, 2022 for the first site visit and assessment after mass grading concluded on the site per NCDWR's requirements and Specified Additional Conditions. No rain was recorded within 72 hours of the site visit. • Mass grading and compaction of building pads and roadways adjacent to the stream has concluded. Minor fine grading is ongoing. Installation of onsite stormwater and plumbing systems has begun. • The majority of the reach of stream outside of the work area was moderately saturated with some localized pooling of water to a depth of approximately 1-2 inches • Minimal or no flow was observed throughout the majority reach of stream • No offsite or onsite sediment was noted to enter the stream ECS took numerous photos at each location to ensure quality data was collected. ECS will follow the aforementioned guidelines in the coming months to properly show the streams function as the land around it is developed. Please see attached Figure 1 depicting the location of Monitoring Locations. 2 Stream Monitoring Report NCDWR# 20 -1813 & 20 -1814 Smith Farms at Prosperity Village and Prosperity Ridge Road Extension Project 4840 Prosperity Church Road Charlotte, Mecklenburg County, North Carolina ECS Project Number: 49:11845 Photo Log Site 1: Mass grading and compaction of building pads and roadways concluded. Some seeding in progress. 3 Stream Monitoring Report NCDWR# 20 -1813 & 20 -1814 Smith Farms at Prosperity Village and Prosperity Ridge Road Extension Project 4840 Prosperity Church Road Charlotte, Mecklenburg County, North Carolina ECS Project Number: 49:11845 Site 2: Mass grading of roadways completed. Installation of stormwater and plumbing systems in progress. 4 Stream Monitoring Report NCDWR# 20 -1813 & 20 -1814 Smith Farms at Prosperity Village and Prosperity Ridge Road Extension Project 4840 Prosperity Church Road Charlotte, Mecklenburg County, North Carolina ECS Project Number: 49:11845 Site 3: No flow, moderate leaf litter, minor saturation, no pools. Stream Monitoring Report NCDWR# 20 -1813 & 20 -1814 Smith Farms at Prosperity Village and Prosperity Ridge Road Extension Project 4840 Prosperity Church Road Charlotte, Mecklenburg County, North Carolina ECS Project Number: 49:11845 Site 4: Low flow. Some leaf litter. Small pools of water (<3" in depth). Stream Monitoring Report NCDWR# 20 -1813 & 20 -1814 Smith Farms at Prosperity Village and Prosperity Ridge Road Extension Project 4840 Prosperity Church Road Charlotte, Mecklenburg County, North Carolina ECS Project Number: 49:11845 Closure ECS appreciates the opportunity to provide this assessment report for the referenced project. Please contact us at (919) 414-0214 if you have any questions concerning this report. Sincerely, ECS SOUTHEAST, LLP Jonathan Dale Grubb Environmental Staff Project Manager JGrubb@ecslimited.com Attachments: Figure 1 — Site Location Map .5,-0,0111101/4 W. Brandon Fulton, LSS, PSC,PWS Environmental Principal bfulton@ecslimited.com 7 Legend Prosperity Project Study Area 0 Monitoring Sites 0 150 300 600 Feet Client: WSB Retail Partners Project: Prosperity Church Road Title: Stream Monitoring Locations Stream Monitoring Locations Drawn By: JDG Approved By: WBF Checked By: WBF Date: 12/08/2021 ECS Pro ect No. 49:11845 FIGURE 6