Parallel.ForEach on database and add result to list

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.NET

C#3.5

TPL

I need to update Geocode information in database which I am doing via calling Google MAPs API. To speedup the process I would like to use Parallel.ForEach on database query and then add the results to list of objects which I have done. I have two questions.

1. Is it OK to call Parallel.ForEach on database select query ?
2. Adding values to result list require locking it ?

My code is as below :

string key = ConfigurationManager.AppSettings["APIKey"];
int batchSize = int.Parse(ConfigurationManager.AppSettings["BatchSize"].Trim());
Object lockMe = new Object(); 

PROD_Transform_MovexEntities objEntities = new PROD_Transform_MovexEntities();

var selected = (from cus in objEntities.OCUSAD_LongLat
				where !cus.OPCUA1.StartsWith("PICK UP")
				&& !cus.OPCUA2.StartsWith("PO BOX")
				&& cus.Cust_Long == null
				&& cus.Match_Date == null
				select cus).Take(batchSize);

List<CustomerAddress> lstResult = new List<CustomerAddress>(batchSize);

//Is this OK ?
Parallel.ForEach(selected, new ParallelOptions() { MaxDegreeOfParallelism = 10 }, sel => {
	CustomerAddress objThisCus = new CustomerAddress();
	objThisCus.CustomerNumber = sel.OPCUNO;
	objThisCus.AddressRT = sel.OPADRT;
	objThisCus.AddressID = sel.OPADID;

	try
	{
		string address = sel.OPCUA2 + " " + sel.OPCUA3 + " " + sel.OPCUA4;
		GeoDetail objResult = GetGeoDetails(key, address); // Get Geocodes from Google MAPs API call
		objThisCus.Latitude = objResult.Latitude;
		objThisCus.Longitude = objResult.Longitude;
		objThisCus.AddressType = objResult.AddressType;
		
		if(objResult.Error.ToUpper()!="OVER_QUERY_LIMIT")
		{
			lock (lockMe) 
			{
				lstResult.Add(objThisCus);
			}
		}

	}
	catch (Exception ex)
	{
		Console.WriteLine(ex.ToString());
	}

});