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measures will be implemented prior to the start of any construction activities and will remain in place untiI site <br />stabilization has been achieved. Specific measures may include silt fence, rock construction entrance, <br />sedimentation basins, check dams, erosion control blankets, and prompt re-vegetation of'disturbed areas via seeding <br />and mulch. Regular inspection will ensure that measures implemented remain effective. <br />There are no highly credible soils or steep slopes on the trunk sewer alignment. <br /> <br />a. Compare the quantity and quality of site runoff before and after the project. Describe <br /> permanent controls to manage or treat runoff. Describe any stormwater pollution <br /> prevention plans. <br /> B~:cause the sewer pipe will be buried, the quantity and quality ofrunoffbefore and after the project will not , <br /> change significantly. Discharge Rom dewatering activities during excavation is discussed in Item 13 and will be <br /> conducted as stipulated in applicable permits and approvals (see Items 8, 12, 13 and 16). <br /> With increases in impervious surface areas associated with development, increases in stormwater runoffvolumes <br /> and rates are possible. Stormwater runoffvolume and rate increases from enabled development will be managed <br /> through the application of the City's stormwater management plan to the area where development occurs. <br /> <br />b. Identify routes and receiving water bodies for runoff from the site; include major " <br /> downstream water bodies as well as the immediate receiving waters. Estimate'impact <br /> runoff on the quality of receiving waters. <br /> [icom ring water bodies in the vicinity of the proposed project include wetlands and ultimately the Mississippi <br /> Rivet-. As discussed in [tom 16, appropriate erosion and sediment control measures will be implemented altering <br /> c~mstruction, and runoff from the site will be minimized. Because the sewer pipe will be placed below grade, and <br /> because the disturbance caused by construction of the pipe will be temporary, permanent significant impacts to <br /> receiving water bodies are not anticipated. <br /> Vegetation will be restored as soon as possible after construction and in accordance with permit requirements. Fiber <br /> blankets, mulch and/or hydraulic seeding will be used where necessary to ensure prompt re-vegetation. The NPDES <br /> General ?ermit for Discharge of Stormwater during Construction Activities will outline specific timeline provisions <br /> tbr re-vegetation, The contractor will comply with these timelines. <br /> Any necessary watershed permits will be applied for. <br /> <br />a. Describe sources, composition and quantities Of all Sanitary, municipal and industrial. <br /> wastewater produced or treated at the site. <br /> Thc trunk sewer will serve portions of Ramsey on the west side of the Town Center (see Figure 5). It will carry <br /> average design flows of I. 1 MGD (peak: 3.14 MGD) and will convey the sanitary wastewater to the Metropolitan <br /> Wastewater Treatment Facility (WWTF) in St. Paul. The wastewater wilt be within the range of normal strength <br /> domestic wastewater. <br /> ~[~te current allocation fbr the City of Rarnsey to the Metropolitan Wastewater Treatment Facility is 3.8 MGD with <br /> cmTent discharges to the WWTF of 0.6 MGD. <br /> <br />b. Describe waste treatment methods or po!lution prevention efforts and give'estimates <br /> of composition after'treatment. Identify receiving waters, including major downstream <br /> water bodies, and estimate the discharge impact on the quality of receiving waters. If <br /> (he project involves on-site sewage systems, discuss the suitability of site conditions <br /> for such systems. '. <br /> -I'he project service area does not have centralize.,d wastewater treatment and collection service. As expected, an <br /> area currently relying on on-site wastewater treatment systems is not likely to be the location for high-strength <br /> wastewater generators. There are no permittees registered in the Metropolitan Council Environmental Services <br /> lndttstrial Waste Permit Program in the project service area, nor are any otherwise known to exist. <br /> <br />-477- <br /> <br /> <br />