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Correspondence - 2494 Black Lake Road - 6/5/20251 Theresa Schyma From:Theresa Schyma Sent:Friday, June 7, 2019 2:10 PM To:sales@autumnridgehomesmn.com Subject:FW: *New Home* 2478 Black Lake Road Attachments:Black lake management survey.pdf; 190289-2478 Black Lake Road Spring Lake-Proposed Survey REV 6-4-19.pdf; 2478 Black Lake Rd Stagging.docx Importance:High Good afternoon Brian, Our City Planner Al Brixius will be reaching out to you to setup an in-person appointment to discuss your proposed plans. He believes discussing the remaining items in-person will be the best way to resolve any remaining issues in a timely manner so that the application can move forward to the building permit application process. The City Planner did review your revised plans and provided comments below in red. Also our City Engineer’s comments regarding the storm water management plan are as follows: 1. Please provide details/description of the proposed rock garden areas. These areas will be required to allow for infiltration through the bed (permeable fabric versus plastic) or that area will need to be included in the Impervious calculations. 2. A stormwater management plan that accommodates the additional impervious from the site must be submitted for approval. 3. Please add the Lake 100-year high water elevation and Ordinary High Water Level o the survey/plan. 4. Please provide details for the proposed retaining walls. It appears that some of the walls may require structural designs and construction/grading on adjacent properties due to the proposed heights. Please provide details of the proposed construction. 5. Please complete and provide approvals for the necessary Minnehaha Creek Watershed District Permits, which may include Erosion Control, Floodplain Alteration, Shoreline and Streambank Stabilization, and Stormwater Management. Have a nice weekend, Theresa Schyma City Clerk, MCMC | City of Spring Park  952.471.9051 From: sales@autumnridgehomesmn.com [mailto:sales@autumnridgehomesmn.com] Sent: Tuesday, June 4, 2019 11:22 AM To: Theresa Schyma Subject: RE: FW: *New Home* 2478 Black Lake Road Importance: High Theresa, attached is a revised staging letter that includes a corrected front yard width along with explanation of where the Porta Potti and dumpster will go. I also include 3 more neighboring properties. I also attached 2 surveys, one clean one with the gutters and downspouts shown and one marked up showing the temp parking area along with gutters, landscape rock beds and lawn location. The survey does show 2 rows of silt fence along the lake side and we use bio rolls for the street side. 2 The final landscape plan includes rock beds for the entire street side along with dry rock beds down both sides of the house up to the rear of the house. From there it will be grass. I designed the house with a hip roof and a eyebrow roof over the garage so I could use gutters all the way around the perimeter of the roof to control the run off and direction of the water flow. The stock piling of dirt will be at the rear corner of the foundation and will have 2 rows of silt fence between it and the lake. To date I've had over 2 dozen successful design/builds on lake Minnetonka with no issues what so ever with run off using this method. Please let me know if there is anything else. Sincerely, Brian Harju President/CEO Autumn Ridge Homes Inc. 415 County Rd. 110 N Minnetrista, MN 55364 BL# BC637701 sales@autumnridgehomesmn.com autumnridgeh.com 763-269-2697 -------- Original Message -------- Subject: FW: *New Home* 2478 Black Lake Road From: Theresa Schyma <tschyma@ci.spring-park.mn.us> Date: Fri, May 31, 2019 1:18 pm To: "sales@autumnridgehomesmn.com" <sales@autumnridgehomesmn.com> Good afternoon Brian, Our City Planner has reviewed your application materials and offers the following comments: Construction Staging plan. These plans are required with all building construction due to the small lot sizes, limited street widths and proximity of adjoining homes. The Staging plan is intended to attempt to 3 mitigate the nuisance issues associated with site construction for the surrounding neighborhood. 1. The Staging and deliveries narrative is quite comprehensive. The narrative states that they will provide a 60’x 20’ parking area extending from the street into the lot. The site plan “Before Demolition and Grading Begin notes indicate that a temporary rock construction entrance extending at least 50 feet from the street into the site. The narrative and site plan notes conflict. Applicant shall clarify which option will be pursued. The larger parking and service area outside of the street will reduce the traffic burden for neighboring properties. The revise plan show the parking area across the entire street side yard and explains the implementation in their narrative. This is acceptable. 2. The Staging and deliveries plan indicates they will notify the three neighboring homes of dates for deliveries and work at the site. In examining the Hennepin County GIS, I believe that 6 properties will be impacted by the traffic to this site and home construction. Notification shall be expanded to the 6 properties on both sides of the Black Lake Road nearest to the construction site. The new narrative indicates that they will notify 5 adjoining neighbors of deliveries and work on the site. I recommend that the notify 6 neighbors along Black Lake Road. This recommendation is based on six lots that may be impact by construction traffic due to proximity and driveway location. 3. Parking shall be limited to the on-site parking. The applicant shall demonstrate that the adequate parking exists when deliveries are being made. If construction crews /subcontractor vehicles exceed the available parking at the site. The plan must identify off-site parking options. The temporary parking area will be 50’ x 24 ‘, the site plan shows that the dumpster (10’ x 20’) and the porta- potty will occupy the north 15’ of the parking area, leaving approximately 35’ of parking area for 2 carpenter vehicles, 1 job trailer and 1 bobcat. The parking area will be adequate except when the site deliveries are being made. Where will the carpentry crew vehicles and trailer be parked to free up the parking area for delivery trucks? We recognize that the deliveries will be scheduled, property owners will be notified and off- load will be a short event, but parking area must be available to allow the larger delivery vehicle to turn around and leave the site. Please address this issue. 4. Work activities shall be limited to the hours of 7:00 a.m. to 8:00 p.m. on weekdays and 8:00 a.m. to 5:00 p.m. on weekends. Applicant shall provide notice of site deliveries 2 days prior to the event. The times restrictions will be condition of building permit approval. The plan adequately addresses; site clean up, street clean-up, dust control and contact information. Construction Staging Site Plan. The applicant must provide a site plan that shows the following items to show they fit the lot. This information must be provided prior to issuing the building permit. 1. The location and extend of the proposed on-site parking/ loading areas. 2. Location of Trash dumpsters / roll offs. 3. Location of Biffs 4. Location of dirt stock piles. 5. Erosion and sedimentation devices. Site Plan review: The site is zoned R-1 Single and Two Family zoning district. 4 1. The single family home is a permitted use in the R-1 zoning district. 2. While the lot area (8869 sq. ft.) is below the minimum lot area standard, this lot of record is considered buildable because the lot has access to municipal utilities and the proposed building meet the required R-1 setbacks. 3. The proposed building meets all the R-1 required setbacks. 4. The proposed site plan exceeds the 30% hardcover standard for R-1 lots. Within the R-1 district residential development may have hardcover up to 40 % of lot area with provisions for on-site storm water treat before site drainage enters the lake. The applicants site plan identifies that the new plan reduces hardcover over the previous house. However, the previous home has be removed for over one year, as such any grandfathered rights to a legal nonconforming condition has expired. The current construction is subject to the current zoning standards. The city may approve hardcover over 30% of lot area and less than 40% of lot areas with an on-site storm water management plan that is approved by the City Engineer and the Watershed district. The on- site storm water measures may consist of the following; Iv .Measures to be taken for the treatment of stormwater runoff and/or prevention of stormwater from directly entering a public water. The measures may include, but not be limited to the following: (A) Installation of rain gardens, infiltration basins, or bio filtration basins should be considered for treatment of stormwater runoff from hard surfaces. Filtration basins should be considered if soil conditions are not favorable for infiltration. (B) Installation of erosion control devices, including silt fence, bio-rolls, erosion control blanket, and storm sewer inlet protection should be used. (C) Installation of oil-skimming devices and sump catch basins should be used to improve water quality. (D) Stormwater runoff from hard surfaces should be directed into pervious areas (grassed lawns or landscape beds) through site grading and use of gutters and downspouts. (E) Hard surfaces should be constructed using pervious pavement or pavers, or raised materials such as decking which has natural earth or other pervious material beneath or between the planking. (F) Grading and construction techniques should be implemented that encourage infiltration of stormwater runoff. (G) Installation of berms or basins should be considered to temporarily detain water before dispersing it into pervious area. The applicant may choose the measure to meet the storm water management conditions of the code. They may wish to contact the City Engineer to discuss options and what measure are most effective and least intrusive on the lot. The storm water management plan must be approved by the City Engineer. In review of what they are suggesting I have the following comments and questions. 1. They have proposed using gutters around the house to capture and direct drainage away from adjoin lots. This is an excellent option. 2. They are proposing rock beds around the street side and side yards to direct drainage to the lake. I believe that the rock beds will not allow infiltration and would be counted as hard 5 cover. A single family lot cannot exceed 40% hardcover. Based on the applicant’s storm water plan it appear the house, driveway, and rock cover will comprise approximately 60% of the lot area. The City Engineer will need to comment on whether the rock beds are hardcover. 3. The roof, gutter and rock beds may increase the velocity of the storm water drainage to the lake, the plan does not provide any plan for retention or treatment other than erosion control during construction. 4. Hard cover may exceed 30% of lot area up to 40% of Lot area with a storm water management plan that prevents direct drainage into the lake. The code cited above outlines measures that may be implemented to receive approval of up to 40% hard cover for a single family lot. Recommendation: Prior to issuance of the building permit the applicant must address the aforementioned issues of this email. Please have the applicant call me (Al Brixius @ 763-957-1100) if there are any questions regarding this correspondence. The city engineer is also reviewing this site plan and will provide comments. Based on may review of the revised staging plan, approval of the staging plan and building permit will require the following: 1. Notice of deliveries and work will be given to six single family properties near the work site. 2. The developer identify the parking both on-site and off-site to accommodate peak activity times at the site (deliveries). See comments above. 3. Construction activities shall abide by the working hours noted above. 4. The City engineer and Watershed district shall approve the storm water management plan to allow hard cover over 30%, up to 40% of the lot area. Have a nice weekend, Theresa Schyma City Clerk, MCMC City of Spring Park 4349 Warren Ave Spring Park, MN 55384 952.471.9051 tschyma@ci.spring- park.mn.us www.ci.spring-park.mn.us City Hall Hours are Monday - Friday 8:00 a.m. - 4:30 p.m. PLEASE NOTE: Summer Hours are Monday - Thursday 7:30 a.m. - 5:00 p.m., Friday 7:30 – 11:30 a.m.